WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

RE: [Xen-devel] XP: VBD could not connect to backend device:USB boot

To: "Kaushik Barde" <Kaushik_Barde@xxxxxxxxxxx>, "Mark Williamson" <mark.williamson@xxxxxxxxxxxx>
Subject: RE: [Xen-devel] XP: VBD could not connect to backend device:USB boot
From: "Kaushik Barde" <Kaushik_Barde@xxxxxxxxxxx>
Date: Sun, 11 Mar 2007 22:11:25 -0700
Cc: "Petersson, Mats" <Mats.Petersson@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Sun, 11 Mar 2007 22:10:37 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <0EF82802ABAA22479BC1CE8E2F60E8C30168EB75@xxxxxxxxxxxxxxxxxxxxxxx> <200703102053.35898.mark.williamson@xxxxxxxxxxxx> <0EF82802ABAA22479BC1CE8E2F60E8C30168EC67@xxxxxxxxxxxxxxxxxxxxxxx> <200703120501.48093.mark.williamson@xxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AcdkY28g4UJPihuxTAC88op7wADDZAAABFdgAABJWiA=
Thread-topic: [Xen-devel] XP: VBD could not connect to backend device:USB boot
When I changed from hda1.. I see 768 VBD error.

May be that's what I had before.

Thanks.

-Kaushik 

-----Original Message-----
From: Kaushik Barde 
Sent: Sunday, March 11, 2007 10:04 PM
To: 'Mark Williamson'
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx; Petersson, Mats
Subject: RE: [Xen-devel] XP: VBD could not connect to backend device:USB
boot

Whew... I'll try this one..

Regarding 768,

I had an incorrect disk='...' entry.

Other small behavioral change is that now an "Untitled" window shows up
and then I see above mentioned error..


I will try this suggestion.

Thanks.. 

-Kaushik

-----Original Message-----
From: M.A. Williamson [mailto:maw48@xxxxxxxxxxxxxxxx] On Behalf Of Mark
Williamson
Sent: Sunday, March 11, 2007 10:02 PM
To: Kaushik Barde
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx; Petersson, Mats
Subject: Re: [Xen-devel] XP: VBD could not connect to backend device:USB
boot

Just noticed something:

disk = 
['file:/root/xenimages/hd.img,ioemu:hda1,w',
'file:/root/xenimages/XP.iso,hde:cdrom,r'] 

You can't export devices as partitions for HVM guests; you need to
change the 
hda1 to an hda...

Have you tried that?

Cheers,
Mark

On Monday 12 March 2007 03:51, Kaushik Barde wrote:
> Thanks guys.
>
> But no luck. I did try removing both 'ioemu' and '
>
> Error: Device (769) could not be connected. Backend devices not found.
>
> Still is the problem.
>
> I have attached Xen start-up log, xm file along with this email...
>
> My kernel is 2.6.16-33, Xen-3.0.3/3.0.4.. If that helps..
>
> Note, I am booting from a USB/LILO combo and not from the hard-disk...
>
> I do have enough loop devices, compiled into the kernel..
>
> -Kaushik
>
>
>
> -----Original Message-----
> From: M.A. Williamson [mailto:maw48@xxxxxxxxxxxxxxxx] On Behalf Of
Mark
> Williamson
> Sent: Saturday, March 10, 2007 12:54 PM
> To: xen-devel@xxxxxxxxxxxxxxxxxxx
> Cc: Kaushik Barde; Petersson, Mats
> Subject: Re: [Xen-devel] XP: VBD could not connect to backend
device:USB
> boot
>
> Well, as Mats said, it would seem that some fundamental setup is
> breaking
> somewhere.  Gosh, that does sound a bit vague of me, sorry!
>
> I take it you've checked the disk images (e.g. /root/xenimages/hd.img)
> are
> mounted at the correct positions.  You don't need the ioemu: syntax
> anymore,
> so try removing that.
>
> Finally, you could try removing the CDROM argument to simplify the
> setup,
> although this shouldn't make a difference! (I don't believe the
problem
> is
> with the CD-ROM itself - the error suggests hda can't connect).
>
> I'm sorry I don't have anything more specific to suggest right now -
but
> it
> looks like it ought to be fixable, anyhow.  Hopefully we can figure it
> out
> together.
>
> Cheers,
> mark
>
> On Friday 09 March 2007 17:16, Kaushik Barde wrote:
> > Thanks Mats,
> >
> > We also tried looking at xm logs but could not see anything obvious.
> >
> > Attached are our hvm files..
> >
> > Please advise..
> >
> > Best.
> >
> > -Kaushik
> >
> >
> >
> > -----Original Message-----
> > From: Petersson, Mats [mailto:Mats.Petersson@xxxxxxx]
> > Sent: Friday, March 09, 2007 8:53 AM
> > To: Kaushik Barde; xen-devel@xxxxxxxxxxxxxxxxxxx
> > Subject: RE: [Xen-devel] XP: VBD could not connect to backend
>
> device:USB
>
> > boot
> >
> > > -----Original Message-----
> > > From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
> > > [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of
> > > Kaushik Barde
> > > Sent: 09 March 2007 16:48
> > > To: xen-devel@xxxxxxxxxxxxxxxxxxx
> > > Subject: [Xen-devel] XP: VBD could not connect to backend
> > > device: USB boot
> > >
> > > Hi:
> > >
> > > we have following setup:
> > >
> > > 1. 2.6.16-33-based Xen 3.0.3/Xen-3.0.4 DOM-0 kernels.
> > > 2. Using LILO-mbootpack from USB we boot Xen-->DOM-0 setup
> > > 3. We mount harddisk and try to install xp.hvm
> > >
> > > While,we are successful with FCs as DOM-U, for XP we get, VBD
> > > (768) could not be connected.
> >
> > But there's obviously something else wrong, as the conection of the
>
> VBD
>
> > happens LONG before the OS is loaded, so the fact that you're using
XP
> > doesn't make any difference at all.
> >
> > Can you post a configuration file for the XP domain (strip comments
>
> and
>
> > empty lines please).
> >
> > --
> > Mats

-- 
Dave: Just a question. What use is a unicyle with no seat?  And no
pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel